Can I limit the amount of submissions per person?

Am I able to limit the amount of submissions someone makes? For example, if I only want them to be able to submit a response once to a question or an answer to a form (or only submit ONE form), is that possible?

There are a few different ways you can limit the number of submissions for your form.  Here are our guides on what they are and how to set up each one:

http://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form

https://www.jotform.com/help/137-How-to-limit-submissions-in-a-form